Car-truck construction



Feb. 4, 1930. JOHNSON 1,745,679

CAR TRUCK CONSTRUCTION Filed Dec. 5, 1927 2 Sheets-Sheet l Feb. 4, 1930. G. T. JOHNSON 1,745,579

CAR TRUCK CONSTRUCTION Filed Dec. 3. 1927 2 Sheets-Sheet 2 Patented Feb. 4, 1930 PATENT OFFICE .enonn r. JOHNSON, :or COLU US, 01110, AssIGNoR fro THE BUCKEYE STEEL CASTINGS COMPANY, orcoLuiurus, OHIO CARI-[TRUCK consraucrron Application filed 'hecember'ii, 1927. Serial No. 237,466.

This? invention relates to improvements in car truck constructions and more part cularly to irnproyed spring-mountings,'+the object of the invention being to provide simple and 5 eflicient. means for supporting springs indirectly by the springplank and for supporting certain of the springspartially by the side frame and partially indirectly by the spring plank.

10 A further object is to provide a structure in which the spring plank is removably interlocked with the side frame, and in which a separate spring seat member is disposed upon I the spring plank, said separate spring seat member'being made with elevated spring seat portions which cooperate with parts of the side frame in supporting the outer springs of a cluster of springs, theintermediate springs of such cluster of springs being supported at a lower level upon the separate spring seat member. a I

With these and other objects in View, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims.v r

V In the accompanying drawings:

Figure 1 is a partial side elevation of a car truck side frame showing an embodiment of my invention F igure2 is a view in section on the line 22 V of Figure 1, the springs being indicated in dotted lines; I

Figure 3 is a view partly in section and partly in elevation showing a modified construction; j

Figure 4 is a horizontal sectional view of the construction shown in Figure 3, and

Figure 5 is a sectional view taken at right angles to Figure 3.

A portion of a truck side frame is shown in h the drawing and comprises a top or compres- I sion member 1, a bottomor tension member 2, and columns 3 connecting the top and bottom members and defining an opening 4 which receives a bolster 4 In the lower portion of the opening 4, shelves 5 to provide spring seats are formed on the lower member of the side frame. A spring plank 6 enters the lower portion of the opening 4 and rests upon the on the elevated shelves 13 at the intermediate portion 7 of the lower member of theside frame, and between the shelves 5,straight flanges 8 projecting upwardly from the side edges of said spring plank being disposed parallel with the inner walls of the shelves 5. In the present instance, the spring plank is preferably constructed of pressed sheet steel and ithas detachable interlocking connection with the side frame which will be operable normally to prevent lateral displacement of the side frame but which will permit easy disconnection of the side frame from the spring'plank when it isdesired to remove saidside frame. To effect detachable interlocking connection between the 5 spring plank and side frame, the intermediate portion 7 of the latter may be provided with studs '9 which rise from the bottoms of recesses 10 in the top of the portion 7 of the side frame and pass throughsuitable holes in the spring plank. The studs 9 project above the upper. faceof the spring plank and pass through suitable holes in a separate spring seatmember 11 disposed upon the spring plank and prevent, displacement of said spring seat members. The separate spring seat member may consist of a pressing or a casting and is provided at diametrically opposite positions with upstanding flanges 12 provided at their upperedges with laterally :30

shelves are in the same horizontal plane as that of the upper faces of the shelves 5 on the side frame. Inorder to brace the shelves-13 and flanges 12 onthe seat member 11, webs 14 may be employed.

Springs 15 are disposed under the bolster and are seated at their lower ends upon the separate spring seat member 11 on the spring plank 6. Outer springs 16 of the cluster of springs employed, are seated partially upon the shelves 5 in the side frame and partially separate seat member 11 on the spring plank, the upper ends of these springs engaging under the'bolster. If desired, shims 17 may be disposed under the springs 16 and made to overlie the shelves 5 and 13.

sides of the 9 'i It will be observed that a portion of the load on the outer springs 16 will be transmitted to the shelves 5 on the side frame and a portion ofsuch load will be borne by theshelves13 on the separate seat member 11 and as the latter is mountedupon the spring plank, such portion of the load on the springs 16 will be borne indirectly by the Spring. plank.- In the imbodiment of the inventionfshown in Figures 3, 4 and 5, a separate spring seat member 18 is mounted upon the spring plank 6, the latter being removably interlocked with the side frame and the member '18 being con: nected with spring plank by the lugs 9, as previously described in connection with the form of the invention shown in Figures 1 and 2. In the construction shown in Figures 3, 4 and 5, the seat member 18 is provided with upstanding flanges 19 and shelves which extend over adjacent portions of the straight flangesS of the springplank and overlie the shelves 5 on the side frame. The shelves 20 and flanges 19 may be braced by webs 21.

Having fully described my invention what.

I claim as new and desire to secure byLetters-Patent, is

1. The combination with a side frame, of a two-level spring bearing member having indirect removable interlocking connection by means of a lug and aperture joint with the side frame in its normal position and adapted when disconnected from such lugs, to permit lateral withdrawal of the side frame at the lower portion thereof and a spring plank eX- tending between the side frame and spring bearing member. i I v 2. The combination with a side frame and a spring plank, a separate spring seat .member mounted upon the spring plank and having elevated shelves, springs partially supported by said shelves, and means on the side frame also partially supporting said springs.

3. The combination with a side frame and a spring plank having removable interlocking connection therewith, a separate spring seat member mounted upon the spring plank and having elevated shelves, springs partially supported by said shelves, and means. on the side frame also partially supporting said springs.

4. The combination with a side frame having shelves, of a separate springseat member supported upon the spring plank, said seat member having elevated shelves in the same plane as that of the shelves on the side frame, springs seated on said separate seat member between the elevated shelves thereon, and

ing elevated shelves at its sides projecting over the shelves on the side frame, the spring plank and the separate spring seat member having a common removable interlocking connection with the side frame formed by a lug and aperture joint, springs supported on the spring seatlrnemberbetween theshelves,

and other springs resting on the shelves. 1 6. The combination with aside frame, of

"a two-level spring bearing member having indirect removable interlocking connection with the side frame in its normal position and adapted when disconnected from such interlockingv connection, to permit lateral withdrawal of the side frame at the lower portion thereof, and a spring plank extending between the side frame and springfbearing member, said interlocking eonnection'be- "GEORGE r. JOHNSON.

other springs supported partially by said eleing shelves, of a spring plank, a separate spring seat; member supported upon the spring plank, said spring. seat-memberhav- 

